Burner.



PATENTED NOV, 8, 1904.

G. G. SMITH.

BURNER. APPLICATION FILED APR. 20, 1903.

NO MODEL.

7 4L. 5 1 o i /r. 1

UNTTEE STATES Patented November 8, 1904.

PATENT EEicE.

BURNER.

SPECIFICATION forming part of Letters Patent No. 774.,456, dated November 8, 1904.

Application filed April 20, 1903. $erial No. 153,408. (No model.)

To all whom, it may concern.-

Be it known that LGnoRen GREGORY SMITH,

a citizen of the United States, residing at San Domenico, Florence, Italy, have invented certain new and useful Improvements in Burners, of which the following is a specification.

This invention relates to burners in which the flame is fed by a mixture of gases comprising a combustible and a supporter of combustion and which are especially suited for the burning of gases in whose combination in the production of a flame an intense heat is produced.

The present invention is especially adapted for the use of acetylene gas or other gaseous compounds rich in carbon and with which oxygen is combined at the point of ignition. Great difficulty in practice has heretofore been found in employing oxygen gas with acetylene gas for the production of a flame, one of the chief troubles experienced resulting from the intense temperature produced in the combination. In consequence of the high temperature attained the burner-tips are melted or softened to an extent that renders the use of undiluted oxygen in connection with acetylene impracticable.

In the practicable application of the present improvements I preferably cause the oxygen to issuefrom its discharge-orifice in the form of an enveloping sheet around the acetylenegas nozzle.

In the drawings accompanying the present specification there is set forth an embodiment of the present improvements.

In the drawings, Figure l is an elevation of such embodiment, part being in section. Fig. 2 is a similar view at right angles to the viewpoint of Fig. 1. Fig. 3 is a plan view of the burner-supports, showing a means which may be employed for effecting their adjustment. Fig. 4 is a sectional view of one of the burnerbodies, being taken at right angles to the plane of the corresponding section in Fig. 1 and drawn to a somewhat larger scale.

Similar characters of reference designate corresponding parts in all figures.

The present improvements are especially suited for the employment of undiluted oxygen gas (as distinguished from ordinary air) as a combustion-supporter for acetylene gas. Difiiculty has been experienced heretofore in the use of oxygen in such condition with acetylene gas, owing to the intense heat produced in their combination of combustion. This heat being communicated to the burner tips or nozzles destroy or impair their efficiency in a comparatively. short time. In order to obviate the trouble from this source, I project the acetylene-discharge nozzle somewhat beyond the exit-orifices or the oxygen, and in the practical application of the invention I find, furthermore, that excellent results are produced by causing the oxygen gas to issue in the form of an annular stream encircling the inner nozzle and jet of acetylene. For the burning of the latter gas I may employ the usual method or device that has been used with acetylene, consisting, as well known, of two relatively angular jets of the gas, which impinge against each other.

Proceeding to a detail description of the .present embodiment, the acetylene-discharge 3, having an orifice or opening 4 at one extreInity for the discharge of the oxygen. The conical-ended nozzle2 extends through the said orifice of its barrel 3 and terminates somewhat beyond such orifice, the relative disposition being clearly indicated in the drawings and the two constituting a bu rner-body. Each inner nozzle is adjustable longitudinally Withinits barrel, and thus a greater or less annular area for the discharge of the oxygen may be obtained. The-tapering end of the nozzle may be used to shut oif the discharge of the oxygen altogether. Thisadjustability of the inner nozzle is secured in this instance by forming at the rear end thereof and adjacent to the end of its surrounding barrel a threaded plug 5, adapted to engage with a thread in the bore of-the barrel. For readily adjusting the inner nozzle a knurled thumb-piece 6 is provided and guide Wings on the nozzle, which fit against the inner wall of the barrel and maintain the nozzle central, as designated by 7.

The acetylene-nozzle tube is here shown I with along-continued burning of the gas in the provided with a pro ection 8 for the attachment of a flexible gas-delivery tube, (not shown,) while from each barrel 3 extends a similar projection 9 for the attachment of a flexible tube supplying oxygen. A rear guide on the nozzle 2, slidably fitted in the barrel, is designated by 10, the same being provided with longitudinal openings 11 to permit the free passage of the oxygen to its orifice in the barrel.

Of course the means for discharging the impinging jets of acetylene are mounted upon a suitable support, and while I have shown a simple form thereof, together with simple adjusting devices, obviously the same may be of different forms and construction to that illustrated. The illustrated support comprises a base 12, upon which is erected a split tubular upright 13, in which may be held frictionally tight a stem 14, slidably mounted therein. At the upper end of this stem is mounted a crossplate 15, serving as a supporting-guide for the respective burner-bodies. These latter may be adjusted in and out to cause them to approach or recede from each other by a right and left hand screw 16, having one or more thumb-pieces 17 and this screw engages, respectively, with tapped openings in dependent ears 18. In order that the angularity of the burnerbodiesthat is, the angle at which the impinging streams of gas meet each othermay be changed, each bu rner-body has a hinged connection with reference to its corresponding lug or ear 18, binding-screws 19 being provided for clamping the burner-bodies in their adjusted positions.

It sometimes happens that even though the streams ofgas impinge against each other when the burner is first lighted in the course of a short time the impinging streams are thrown out of alinement-that is to say, they become displaced somewhat from each other. This is due to various causes, principally expansion and contraction. Preferably means for readjusting them back into proper aline ment will be provided, such means consisting in the present construction of a set of adjusting-screws 20 for each burner-body, which screws pass through tapped openings in an encircling ring 21 integral with the burnerbody-supporting lug or ear. By a proper manipulation of either one of these sets of screws the streams may be brought into a mutually-impinging position.

Such being the organization and relation of the parts, the streams of oxygen issuing from the discharge-orifices pass outward around the projecting acetylene-nozzles and the jets of this gas yielding a jet of flame which begins somewhat distant from the tips of the acetylene-nozzles. It has been found that such an organization is very satisfactory in practlce, smce the nozzles, even at their extremities, remain comparatively cool, even central space between the two burner-bodies.

Having thus described my invention, I claim 1. In an acetylene-gas burner, the combination with a pair of angularly-disposed acetylene-discharge nozzles, of means for discharging an annular stream of oxygen around each of said acetylene-nozzles and at the rear of the discharge-openings in said nozzles, and means for ad usting said nozzles whereby convergent streams of gas may be caused to impinge against each other.

2. In an acetylene-gas burner, the combination with a pair of angularly-disposed acetylene-discharge nozzles, of means for discharging an annular stream of oxygen around each of said acetylene-nozzles and at the rear of the discharge-openings in said nozzles,means for adjusting said nozzles whereby convergent streams of gas may be caused to impinge against each other, and means for adjusting said nozzles toward and away from each other.

3. In an acetylene-burner, the combination with a pair of angularly-disposed adjustable acetylene-discharge nozzles, of means for discharging an annular stream of oxygen around each of said nozzles and at the rear of the discharge-openings in said nozzles, means for adjusting said nozzles whereby convergent streams of gas may be caused to impinge against each other, and means for adjusting said nozzles toward and away from each other.

I. The combination with a base of a standard, a support adjustably mounted in said standard, a pair of burner-bodies carried on said support, an acetylene-discharge nozzle comprised in each burner-body, and a barrel surrounding each such nozzle and having an orifice for the discharge of oxygen, through and beyond which orifices said nozzles extend.

5. The combination with a pair of angularly-adjustable acetylene-discharge nozzles, of a barrel surrounding each such nozzle and having an orifice through and beyond which the corresponding nozzle extends, means for bringing the convergent streams of gas into alinement, a screw for adjusting the nozzles toward each other, a base, and an upright extending therefrom and on which the burner parts are mounted.

6. In a burner, the combination with a bedplate, of a pair of carriages mounted thereon, means to independently adjust the carriages toward and from each other, an acetylene-gas burner mounted upon each carriage, means to angularly adjust the respective burners, whereby the jets will be projected and meet, and means to precisionize such adjustment.

7. In a burner, the combination with a base, of a pair of carriages mounted thereon, means to independently adjust said carriages toward and from each other, a pair of gas-burners each comprising a barrel having an orifice for the discharge of the supporter of combustion and an inner nozzle for the discharge of the combustible extending through and beyond said orifice, means for adjusting the inner nozzle relatively to the outer nozzle, each of the carriages having a pair of ears, each of the barrels having an ear disposed therebetween, a ring surrounding the forward end of the barrel and of greater diameter than the same, a pair of arms supporting such ring and straddling the ears upon the carriage, and a setscreW for tightening such arms upon the ears and for affording a pivot for the ear of the barrel, and set-screws arranged around the ring to precisionize the barrel.

8. A gas-burner comprising a base having a pair of ears, of a barrel having an orifice for the discharge of the supporter of combustion and an inner nozzle for the discharge of tension of the nozzle therethrough, a ring greater in its interior circumference than the exterior circumference of said barrel and surrounding the forward end thereof, a pair of arms carrying such ring and straddling the ears, a set-screw to bind the same together, an ear upon the barrel having a loose fit upon said set-screw, and set-screws in said ring to precisionize the barrel.

Signed at Nos. 9 to 15 Murray street, New York, N. Y., this 13th day of April, 1903.

GEORGE GREGORY SMITH.

Witnesses:

FRED J. DOLE, JOHN O. SEIFERT. 

